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The NPM Peer Dependency Conflict Checker is a web application designed to help developers identify and resolve peer dependency conflicts in their npm packages. The app allows users to input either the contents of a package.json file or an npm error message, and it analyzes the provided data to detect any conflicts. To use the app, users can select between two main tabs: one for analyzing package.json content and another for analyzing manual error messages. In the package.json tab, users can paste their dependencies in either standard or simplified formats. The app will then analyze the input and display any detected conflicts along with recommended solutions. In the manual tab, users can input an npm error message, and the app will parse it to identify potential conflicts. The application is built using modern web technologies, including TypeScript, React, and Next.js, with a focus on a responsive user interface. It utilizes various UI components from libraries such as Radix UI and Lucide React for icons. The app also implements safety measures such as request management, rate limiting, and error recovery to ensure a smooth user experience. Key features of the app include: - Input support for both package.json content and npm error messages. - Automatic detection of peer dependency conflicts with detailed information on required and installed versions. - Suggested solutions for resolving conflicts, including npm install commands. - A user-friendly interface with loading indicators and error handling. - The ability to view detailed information about specific packages, including weekly downloads, license, size, and last publish date. Overall, the NPM Peer Dependency Conflict Checker serves as a valuable tool for developers looking to manage their npm dependencies effectively and avoid common pitfalls associated with peer dependencies.